1) Early feedback gives the developers more time to develop new system features because they spend less time reworking features expected in a given iteration.
2) Early feedback enables agile teams to deliver features with the highest business value first, because the customer maintains focus on features with the highest system value.
3) Early feedback reduces costs because it decreases the amount of time needed for system testing.
4) Early feedback makes it more likely that the system built is what the customer wanted because they are given the opportunity to make changes throughout the iteration.
While creating functional test cases, a tester found out that not all information necessary are available in the available documentation. What the tester would do to create test cases ? Assume this tester is a part of Scrum team.